CN114192106A - Preparation method and application of iron-loaded bentonite - Google Patents
Preparation method and application of iron-loaded bentonite Download PDFInfo
- Publication number
- CN114192106A CN114192106A CN202111437242.3A CN202111437242A CN114192106A CN 114192106 A CN114192106 A CN 114192106A CN 202111437242 A CN202111437242 A CN 202111437242A CN 114192106 A CN114192106 A CN 114192106A
- Authority
- CN
- China
- Prior art keywords
- bentonite
- iron
- loaded
- solution
- preparing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 title claims abstract description 85
- 239000000440 bentonite Substances 0.000 title claims abstract description 82
- 229910000278 bentonite Inorganic materials 0.000 title claims abstract description 82
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 21
- 230000008569 process Effects 0.000 claims abstract description 6
- 239000000243 solution Substances 0.000 claims description 37
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 20
- 238000001994 activation Methods 0.000 claims description 12
- 238000002791 soaking Methods 0.000 claims description 12
- 239000011230 binding agent Substances 0.000 claims description 11
- 230000004913 activation Effects 0.000 claims description 10
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 10
- 239000012266 salt solution Substances 0.000 claims description 10
- 239000002351 wastewater Substances 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 9
- 239000008187 granular material Substances 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 150000002505 iron Chemical class 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 4
- 229920000168 Microcrystalline cellulose Polymers 0.000 claims description 4
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 4
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 239000008108 microcrystalline cellulose Substances 0.000 claims description 4
- 235000019813 microcrystalline cellulose Nutrition 0.000 claims description 4
- 229940016286 microcrystalline cellulose Drugs 0.000 claims description 4
- 238000007873 sieving Methods 0.000 claims description 4
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 4
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims description 2
- 239000012670 alkaline solution Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000003837 high-temperature calcination Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000004065 wastewater treatment Methods 0.000 abstract description 2
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 description 7
- 229940012189 methyl orange Drugs 0.000 description 7
- 239000003513 alkali Substances 0.000 description 4
- 239000011343 solid material Substances 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 238000007605 air drying Methods 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000004042 decolorization Methods 0.000 description 3
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 238000005342 ion exchange Methods 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0225—Compounds of Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt
- B01J20/0229—Compounds of Fe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28016—Particle form
- B01J20/28019—Spherical, ellipsoidal or cylindrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/2803—Sorbents comprising a binder, e.g. for forming aggregated, agglomerated or granulated products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
- B01J20/3204—Inorganic carriers, supports or substrates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
Abstract
The invention relates to the technical field of materials for wastewater treatment, in particular to a preparation method and application of iron-loaded bentonite. The bentonite prepared by the invention is granular, has good decolorizing effect, is easy to apply and convenient to separate, and the preparation method avoids the damage of the high-temperature calcination process in the prior art to the bentonite-shaped structure, reduces the production cost and reduces the production period.
Description
Technical Field
The invention relates to the technical field of materials for wastewater treatment, in particular to a preparation method and application of iron-loaded bentonite.
Background
The bentonite is a non-metal mineral product with montmorillonite as a main mineral component, and because a layered structure formed by montmorillonite unit cells has certain cations such as Cu, Mg, Na, K and the like, the cations and the montmorillonite unit cells are unstable in action and easy to exchange with other cations, so that the bentonite has a better ion exchange effect, is a non-metal mineral with the advantages of large specific surface area, good dispersion performance and the like, has stronger adsorption capacity on pollutants, and is widely used for adsorption treatment of organic pollutants and heavy metals in industrial wastewater in recent years.
The bentonite is a good iron adsorbent, and can be modified by ion exchange of ions on the surface of a crystal layer and composite intercalation, so that the purpose of loading iron is achieved, and the stability of the bentonite is improved. At present, the composite bentonite is mainly prepared into powder, the bentonite has expansibility and suspensibility in a water phase system and is dispersed in a colloidal state in a water medium, so that the effect of directly using the powder bentonite for decoloring is poor, the solid and the liquid are difficult to separate, and the catalyst is inconvenient to recover.
Disclosure of Invention
Aiming at the technical problems of poor decoloring effect, difficult separation and the like of the powdery bentonite, the invention provides the preparation method and the application of the iron-loaded bentonite, and the prepared bentonite is granular, has good decoloring effect, is easy to apply and is convenient to separate.
In a first aspect, the invention provides a preparation method of iron-loaded bentonite, which comprises the following steps of putting bentonite into an acid solution for activation, taking out the bentonite, putting the bentonite, soaking the bentonite in an iron salt solution, taking out the bentonite after soaking, adding an adhesive for mixing, and finally mechanically extruding the bentonite into granules to obtain finished iron-loaded bentonite.
Further, the bentonite is pretreated, and the pretreatment process comprises the following steps: the natural bentonite has a water content of less than or equal to 20% after being dried at 85 ℃, is ground by a grinding mill, is sieved by a 80-mesh sieve, is subjected to impurity removal, is subjected to pretreatment such as crushing and the like, and is capable of improving the effective content of the bentonite and reducing the generation amount of sludge.
Further, the acid solution is a sulfuric acid solution, and the mass concentration of the sulfuric acid solution is 8-15%.
Further, the acid activation process comprises the following steps: the activating temperature is 65-85 ℃, stirring is carried out during activation for 2.5-4 h, the mixture is naturally cooled to room temperature after activation, and the mass ratio of the bentonite to the acid solution is 1: 0.2-0.5.
Further, the activation solution is adjusted to be neutral by using an alkali solution after activation.
Further, the ferric salt solution is ferric chloride solution, and the mass concentration of the ferric chloride solution is 25-30%.
Further, the process of soaking in the ferric salt solution is soaking for 9 hours at room temperature, and the ratio of the ferric salt solution to the bentonite is as follows: the dosage of the iron salt solution is 0.6-1 ml per 0.6-1 g of bentonite.
Further, the adhesive is one or a mixture of two of sodium carboxymethylcellulose and microcrystalline cellulose, and the mass ratio of the bentonite to the adhesive is as follows: 1: 1.5-2.2, and mixing with an adhesive to form a plastic solid material.
Further, the particles are cylindrical.
The second invention provides application of the iron-loaded bentonite for decoloring wastewater and removing COD (chemical oxygen demand).
The invention has the beneficial effects that:
(1) the bentonite is activated by acid, the spacing between crystal layers is further increased, a porous active substance with a microporous structure is formed, the specific surface area is increased, and the adsorption performance and the ion exchange performance are enhanced;
(2) according to the invention, the bentonite is loaded with iron by adopting the soaking and embedding technology, so that the adsorption catalytic capacity of the bentonite can be increased, the damage of a high-temperature calcination process in the prior art to the layered structure of the bentonite is avoided, the production cost is reduced, and the production period is shortened;
(3) the invention processes the powdery bentonite into solid particles, which can effectively solve the difficult problems of solid-liquid separation and recovery;
(4) the finished product prepared by the method has the decolorization rate of 86.8 percent on waste water and the removal rate of 43.3 percent on COD.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The preparation method of the iron-loaded bentonite in the embodiment comprises the following steps:
the method comprises the following steps: drying natural bentonite mined in a mine at 85 ℃ until the water content is 18%, grinding the natural bentonite by using a grinding mill, and sieving the natural bentonite by using a 80-mesh sieve to remove impurities;
step two: adding the screened bentonite into a sulfuric acid solution (mass fraction is 10%), heating to 75 ℃, stirring for 4 hours, naturally cooling to room temperature, adjusting the activated solution to be neutral by using an alkali solution, wherein the mass ratio of the bentonite to the sulfuric acid solution is 1: 0.5;
step three: adding a ferric trichloride solution (the mass fraction is 25%) into the activated bentonite, uniformly stirring, and soaking at room temperature for 9 hours, wherein the ratio of the ferric trichloride solution to the bentonite is 0.9 ml: 0.7 g;
step four: adding a binder, wherein the adding amount of the binder is 1.8 times of the mass of the bentonite, mixing to form a plastic solid material, and selecting sodium carboxymethylcellulose as the binder;
step five: mechanically extruding into cylindrical granules, and naturally air drying at room temperature for 24 hr to obtain granule.
Example 2
The preparation method of the iron-loaded bentonite in the embodiment comprises the following steps:
the method comprises the following steps: drying natural bentonite mined in a mine at 85 ℃ until the water content is 20%, grinding the natural bentonite by using a grinding mill, and sieving the natural bentonite by using a 80-mesh sieve to remove impurities;
step two: adding the screened bentonite into a sulfuric acid solution (mass fraction is 12%), heating to 80 ℃, stirring for 3.5 hours, naturally cooling to room temperature, and then adjusting the activated solution to be neutral by using an alkali solution, wherein the mass ratio of the bentonite to the sulfuric acid solution is 1: 0.4;
step three: adding a ferric trichloride solution (the mass fraction is 25%) into the activated bentonite, uniformly stirring, and soaking at room temperature for 9 hours, wherein the ratio of the ferric trichloride solution to the bentonite is 0.9 ml: 0.8 g;
step four: adding a binder, wherein the adding amount of the binder is 1.8 times of the mass of the bentonite, mixing to form a plastic solid material, and selecting microcrystalline cellulose as the binder;
step five: mechanically extruding into cylindrical granules, and naturally air drying at room temperature for 24 hr to obtain granule.
Example 3
The preparation method of the iron-loaded bentonite in the embodiment comprises the following steps:
the method comprises the following steps: drying natural bentonite mined in a mine at 85 ℃ until the water content is 20%, grinding the natural bentonite by using a grinding mill, and sieving the natural bentonite by using a 80-mesh sieve to remove impurities;
step two: adding the screened bentonite into a sulfuric acid solution (mass fraction is 15%), heating to 85 ℃, stirring for 3 hours, naturally cooling to room temperature, adjusting the activated solution to be neutral by using an alkali solution, wherein the mass ratio of the bentonite to the sulfuric acid solution is 1: 0.3;
step three: adding a ferric trichloride solution (the mass fraction of which is 30%) into the activated bentonite, uniformly stirring, and soaking for 9 hours at room temperature, wherein the ratio of the ferric trichloride solution to the bentonite is 0.7 ml: 1g of a compound;
step four: adding a binder, wherein the adding amount of the binder is 2 times of the mass of the bentonite, mixing to obtain a plastic solid material, and selecting a mixture of sodium carboxymethylcellulose and microcrystalline cellulose as the binder.
Step five: mechanically extruding into cylindrical granules, and naturally air drying at room temperature for 24 hr to obtain granule.
The invention selects methyl orange to simulate dye wastewater for experiment. Preparing methyl orange simulation wastewater with the concentration of 50mg/L, measuring the COD concentration of the wastewater to be 350mg/L, putting the wastewater into a beaker during an experiment, adding iron-loaded bentonite particles, starting a constant-temperature magnetic stirrer to fully mix and react, measuring the concentration of methyl orange after reacting for a period of time, and calculating the decolorization rate.
In the experiment, 200mg of iron-loaded bentonite particles prepared in the examples 1-3 are respectively selected and put into a 250mL beaker, 200mL of methyl orange wastewater with the concentration of 50mg/L is added, the mixture is stirred for 3 hours at normal temperature, the mixture is statically settled, the supernatant is taken to measure the concentration of methyl orange, and the decolorization rate is calculated. The detection results of methyl orange are shown in table 1, and the detection results of COD are shown in table 2.
Table 1 examples 1-3 methyl orange assay results
Table 2 examples 1 to 3COD test results
As can be seen from Table 1, the iron-loaded bentonite prepared by the method has a good decolorizing effect on dye wastewater, and the average decolorizing rate is 86.8%.
As can be seen from Table 2, the iron-loaded bentonite prepared by the method has a good COD (chemical oxygen demand) removal effect on wastewater, and the average removal rate is 43.3%.
Although the present invention has been described in detail by way of preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention.
Claims (10)
1. A preparation method of iron-loaded bentonite is characterized in that bentonite is put into an acid solution for activation, then taken out and put into an iron salt solution for soaking treatment, taken out after soaking, added with an adhesive for mixing, and finally mechanically extruded into granules, thus obtaining the finished product of the iron-loaded bentonite.
2. The method of preparing an iron-loaded bentonite as in claim 1, wherein the bentonite is pretreated by the following steps: drying natural bentonite at 85 deg.C to water content of less than 20%, grinding with a pulverizer, sieving with 80 mesh sieve, and removing impurities.
3. The method of preparing iron-loaded bentonite according to claim 1, wherein the acid solution is a sulfuric acid solution, and the mass concentration of the sulfuric acid solution is 8-15%.
4. The method of preparing iron-loaded bentonite as claimed in claim 1, wherein the acid activation process is: the activating temperature is 65-85 ℃, stirring is carried out during activation for 2.5-4 h, the mixture is naturally cooled to room temperature after activation, and the mass ratio of the bentonite to the acid solution is 1: 0.2-0.5.
5. The method of preparing iron-loaded bentonite according to claim 1 or 4, wherein the activation solution is adjusted to neutral with an alkaline solution after activation.
6. The method for preparing the iron-loaded bentonite according to claim 1, wherein the ferric salt solution is ferric chloride solution, and the mass concentration of the ferric chloride solution is 25-30%.
7. The method for preparing iron-loaded bentonite according to claim 1 or 6, wherein the process of soaking in iron salt solution is soaking at room temperature for 9h, and the ratio of the iron salt solution to the bentonite is as follows: the dosage of the iron salt solution is 0.6-1 ml per 0.6-1 g of bentonite.
8. The method of claim 1, wherein the binder is one or a mixture of sodium carboxymethylcellulose and microcrystalline cellulose, and the mass ratio of bentonite to binder is 1: 1.5 to 2.2.
9. The method of preparing an iron-loaded bentonite according to claim 1, wherein said particles are cylindrical.
10. Use of the iron-loaded bentonite obtained by the method for preparing iron-loaded bentonite according to claim 1, for decolorizing wastewater and removing COD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111437242.3A CN114192106B (en) | 2021-11-29 | Preparation method and application of bentonite loaded with iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111437242.3A CN114192106B (en) | 2021-11-29 | Preparation method and application of bentonite loaded with iron |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114192106A true CN114192106A (en) | 2022-03-18 |
| CN114192106B CN114192106B (en) | 2024-05-14 |
Family
ID=
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115041181A (en) * | 2022-07-27 | 2022-09-13 | 广西至善新材料科技有限公司 | Bentonite-loaded iron molybdate catalyst and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112121822A (en) * | 2020-09-23 | 2020-12-25 | 绍兴文理学院 | Preparation method of biochar/pyrite composite granular Fenton oxidation catalyst |
| CN112337444A (en) * | 2020-09-21 | 2021-02-09 | 广西大学 | Organic modified magnetic bentonite MB/CP and preparation method and application thereof |
| CN113680318A (en) * | 2021-08-24 | 2021-11-23 | 中建三局绿色产业投资有限公司 | Preparation method of granular bentonite adsorbent |
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112337444A (en) * | 2020-09-21 | 2021-02-09 | 广西大学 | Organic modified magnetic bentonite MB/CP and preparation method and application thereof |
| CN112121822A (en) * | 2020-09-23 | 2020-12-25 | 绍兴文理学院 | Preparation method of biochar/pyrite composite granular Fenton oxidation catalyst |
| CN113680318A (en) * | 2021-08-24 | 2021-11-23 | 中建三局绿色产业投资有限公司 | Preparation method of granular bentonite adsorbent |
Non-Patent Citations (6)
| Title |
|---|
| 岳钦艳;原爱娟;李倩;贾洪玉;高宝玉;国新毅;李静;于慧;: "酸化污泥膨润土的颗粒化制备", 过程工程学报, no. 06, 15 December 2008 (2008-12-15) * |
| 张建英等: "改性膨润土处理染色废水的研究", 《杭州大学学报（自然科学版）》, vol. 24, no. 3, pages 260 - 263 * |
| 聂锦旭;刘汨;刘立凡;: "微波强化改性膨润土对活性染料废水的脱色研究", 工业水处理, no. 04, 20 April 2011 (2011-04-20) * |
| 聂锦旭等: "改性膨润土处理染色废水的试验研究", 《化工矿物与加工》, no. 6, pages 219 - 21 * |
| 赵子龙;任建敏;刘高源;: "膨润土改性及其在废水处理中的应用", 重庆工商大学学报(自然科学版), no. 06, 20 December 2008 (2008-12-20) * |
| 金春姬;肖波;任娟;杨平;王金俊;: "粉末状和颗粒状有机膨润土对克百威的吸附", 环境污染与防治, no. 06, 15 June 2011 (2011-06-15) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115041181A (en) * | 2022-07-27 | 2022-09-13 | 广西至善新材料科技有限公司 | Bentonite-loaded iron molybdate catalyst and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Hong et al. | Immobilization of hydrogen manganese oxide (HMO) on alpha-alumina bead (AAB) to effective recovery of Li+ from seawater | |
| CN101362073B (en) | Preparation method of acidification sludge bentonite granules | |
| CN104084126B (en) | The preparation method of biomass-based iron aluminium complex spherical charcoal | |
| CN104445177A (en) | Preparation method of graphene, and graphene | |
| CN106179224A (en) | A kind of nanometer ore deposit crystalline substance containing Graphene purifies granule and preparation method thereof | |
| CN111203180A (en) | Magnetic biochar composite adsorbent and preparation method and application thereof | |
| US4058483A (en) | Adsorbent material | |
| CN111215040B (en) | Preparation method of lithium extraction adsorbent | |
| CN112221461A (en) | Phosphorus adsorption material and preparation method thereof | |
| CN105664877A (en) | Heavy metal wastewater composite adsorbent and preparation method thereof | |
| CN110697745A (en) | Modified hydrotalcite and preparation method and application thereof | |
| Li et al. | Investigation of the adsorption characteristics of Cr (VI) onto fly ash, pine nut shells, and modified bentonite | |
| CN112871126B (en) | Preparation method of lithium ion sieve particles with high adsorption capacity | |
| CN114768752A (en) | Fly ash loaded hydrotalcite-like compound composite adsorbent, preparation method and application | |
| US20200338526A1 (en) | Sorbents from iron-rich and aluminium-rich starting materials | |
| JP2003245542A (en) | Lithium adsorbing agent and method for producing the same, and method for collecting lithium | |
| CN114192106A (en) | Preparation method and application of iron-loaded bentonite | |
| JP3706842B2 (en) | Adsorption method of lithium ion from aqueous solution containing lithium by adsorbent | |
| CN114192106B (en) | Preparation method and application of bentonite loaded with iron | |
| CN113289571A (en) | Preparation method of lithium-enriched particle material | |
| JPH038439A (en) | Granular lithium adsorbent and method for recovering lithium by using this adsorbent | |
| JP2683225B2 (en) | Method for producing activated carbon and method for using the activated carbon for water treatment | |
| RU2597400C1 (en) | Method of producing composite sorbent based on mineral and vegetable carbon-containing material | |
| CN114733486A (en) | Preparation method of phosphorus-removing modified biochar | |
| CN104941582A (en) | Negative-ion-containing carbon-based mineral crystal air purification particles and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |